EP0574965A1 - Méthode pour provoquer un signal de changement de vitesse depuis un tableau de commande - Google Patents

Méthode pour provoquer un signal de changement de vitesse depuis un tableau de commande Download PDF

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Publication number
EP0574965A1
EP0574965A1 EP93113886A EP93113886A EP0574965A1 EP 0574965 A1 EP0574965 A1 EP 0574965A1 EP 93113886 A EP93113886 A EP 93113886A EP 93113886 A EP93113886 A EP 93113886A EP 0574965 A1 EP0574965 A1 EP 0574965A1
Authority
EP
European Patent Office
Prior art keywords
accelerator pedal
upshift
control unit
shift
transmission control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP93113886A
Other languages
German (de)
English (en)
Inventor
Andreas Welter
Jürgen Werner
Anton Stephan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0574965A1 publication Critical patent/EP0574965A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/10—Controlling shift hysteresis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
    • F16H59/14—Inputs being a function of torque or torque demand
    • F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
    • F16H2059/183—Rate of change of accelerator position, i.e. pedal or throttle change gradient
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
    • F16H59/14—Inputs being a function of torque or torque demand
    • F16H59/141—Inputs being a function of torque or torque demand of rate of change of torque or torque demand
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
    • F16H59/48—Inputs being a function of acceleration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/16—Inhibiting  or initiating  shift during unfavourable conditions , e.g. preventing forward-reverse shift at high vehicle speed, preventing engine overspeed  

Definitions

  • the invention relates to a method for determining a shift signal from the shift map of an automatic transmission controlled by an electronic transmission control unit in a motor vehicle according to the preamble of the main claim.
  • the shift map is stored in the electronic control unit. DE-OS 28 11 574 shows how this can be achieved.
  • the control unit gives the individual switching valves the command to shift up or down.
  • the shift map contains an upshift characteristic and also a downshift characteristic for each gear change.
  • the shift characteristics are shown as a function of the vehicle speed and the position of the throttle valve or the opening angle. Sensors continuously scan these quantities and send corresponding signals to the control unit. Since in many cases the accelerator pedal is mechanically connected to the throttle valve, the opening angle of the throttle valve can also be determined by the position of the accelerator pedal.
  • DE-OS 28 11 574 can be seen, for example, how an accelerator pedal signal proportional to the position of the accelerator pedal is sampled and fed to the control electronics.
  • FIG. 1 shows a shift map with the individual shift curves.
  • the increasing driving speed, designated v, is plotted on the abscissa and the increasing opening angle ⁇ of the throttle valve of the internal combustion engine is plotted on the ordinate.
  • the accelerator pedal - and this applies to the entire description below - should be mechanically connected to the throttle valve of the internal combustion engine.
  • the change in the angle of the accelerator pedal is proportionally followed by a change in the opening angle of the throttle valve. Rising ⁇ means that the throttle valve opens more and more, which means the accelerator pedal is depressed more and more.
  • the map shows two types of shifting characteristics, namely the characteristic lines 1, 2, 3 and 4 shown with a solid line. They are the upshifting characteristics.
  • the shift characteristic curve 1 represents the upshifting from first to second gear.
  • the shift characteristic 4 is provided for upshifting from fourth to fifth gear.
  • switching characteristics are shown in dashed lines and designated 1 ', 2', 3 'and 4'. These switching characteristics represent the downshift characteristics. They are only mentioned for the sake of completeness, and are essentially unrelated to the present invention.
  • the course of the upshift characteristic 4 is to be described as a representative of the other upshift characteristics.
  • ⁇ that is, from an open throttle valve
  • the upshift characteristic curve 4 initially falls vertically downward.
  • the throttle valve is approximately half-closed, it merges into an obliquely downward curve portion 4d which becomes smaller in the direction of v.
  • a vertically falling short curve branch 4e which merges into a characteristic branch 4a shown in dash-dot lines.
  • the characteristic curve branch 4a indicates the course of the upshift characteristic in a conventional shift map.
  • the gearbox must first shift back from fifth to fourth and possibly even to third gear.
  • the desired engine power is only available again after these switching operations. Since switching back takes time, as mentioned, this can be annoying. In addition, the transmission shifts much more often than would be necessary.
  • the point in time when the upshift characteristic is exceeded is recorded.
  • a time period is specified in the transmission control unit. Has the operating point at the end of the If the upshift characteristic has already been cut a second time, no upshift signal is emitted in the transmission control unit.
  • the accelerator pedal signal which is proportional to the position of the accelerator pedal, is continuously measured and fed to the transmission control unit. There, the accelerator pedal signal is converted into a measured value which reflects the accelerator pedal speed. If the operating point exceeds an upshift characteristic, the current accelerator pedal speed is extrapolated when the operating point will exceed the upshift characteristic the next time. If the time at which the characteristic curve is exceeded a second time lies within a predetermined period of time, the circuit is suppressed. The estimation of the lower intersection point from the current position of the operating point is repeated until the upshift characteristic curve is actually exceeded again or until the calculated point in time lies outside the predetermined period.
  • the invention suppresses upshifting in overrun mode in that the accelerator pedal signal when the operating point of an upshift curve resulting from the current driving speed and throttle valve position is exceeded is converted into a measured value reproduced by the accelerator pedal speed and compared with a limit value stored in the transmission control unit and a switching signal when the limit value is undershot is given for upshifting.
  • the upshift is suppressed when the lateral acceleration of the vehicle exceeds a predetermined limit value.
  • an algorithm can be used to determine the lateral acceleration, which calculates the lateral acceleration from the steering angle and the vehicle speed.
  • only the steering angle is taken into account. It is intended to cover cases in which, for example, the driver leaves the freeway and enters the tight curve of a freeway exit. In this case, an upshift of the transmission would also be nonsensical.
  • FIG. 2 shows an exemplary course of the accelerator pedal speed as a function of time.
  • the size of the accelerator pedal speed is plotted as a function of time. The time is therefore shown on the abscissa with t, while the accelerator pedal speed ⁇ Fahr is plotted on the ordinate. At time zero, which corresponds to operating point A, the accelerator pedal speed is also zero.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)
EP93113886A 1990-01-26 1990-10-20 Méthode pour provoquer un signal de changement de vitesse depuis un tableau de commande Withdrawn EP0574965A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4002325A DE4002325A1 (de) 1990-01-26 1990-01-26 Schaltkennfeld eines automatikgetriebes und verfahren zum ermitteln eines schaltsignals aus dem schaltkennfeld
DE4002325 1990-01-26

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP90120166.5 Division 1990-10-20

Publications (1)

Publication Number Publication Date
EP0574965A1 true EP0574965A1 (fr) 1993-12-22

Family

ID=6398862

Family Applications (2)

Application Number Title Priority Date Filing Date
EP93113886A Withdrawn EP0574965A1 (fr) 1990-01-26 1990-10-20 Méthode pour provoquer un signal de changement de vitesse depuis un tableau de commande
EP90120166A Expired - Lifetime EP0438643B1 (fr) 1990-01-26 1990-10-20 Procédé pour générer un signal de changement de vitesse à partir d'un réseau de courbes de changement de vitesse

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP90120166A Expired - Lifetime EP0438643B1 (fr) 1990-01-26 1990-10-20 Procédé pour générer un signal de changement de vitesse à partir d'un réseau de courbes de changement de vitesse

Country Status (2)

Country Link
EP (2) EP0574965A1 (fr)
DE (2) DE4002325A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0984209A1 (fr) * 1998-08-31 2000-03-08 Eaton Corporation Procédé/système pour commander la montée de vitesse dans un système de transmission mécanique automatique
US6285941B1 (en) 1998-08-31 2001-09-04 Eaton Corporation Method/system for controlling shifting in an automated mechanical transmission system
US6527672B1 (en) 1998-10-24 2003-03-04 Zf Friedrichshafen Ag Method for controlling the automatic gearbox of a motor vehicle during spontaneous release of the accelerator pedal
US6689017B2 (en) * 2000-10-26 2004-02-10 Aisin Seiki Kabushiki Kaisha Shift control apparatus for an automatic transmission and shift control method for an automatic transmission
WO2004046586A1 (fr) * 2002-11-19 2004-06-03 Volkswagen Aktiengesellschaft Procede pour commander une boite de vitesses automatique
US6879900B2 (en) 2000-11-11 2005-04-12 Zf Friedrichshafen Ag Method for controlling an automatic gearbox of a motor vehicle in the event that the gas/pedal is spontaneously released
EP1342939A3 (fr) * 2002-03-08 2006-07-19 Adam Opel Ag Méthode de commande de transmissions automatiques à chemin en lacets

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960015250B1 (ko) * 1992-07-10 1996-11-04 마쯔다 가부시기가이샤 자동변속기의 제어장치
DE4226315C1 (de) * 1992-08-08 1994-02-10 Daimler Benz Ag Anordnung zum selbsttätigen Ändern des Übersetzungsverhältnisses eines Wechselgetriebes eines Kraftfahrzeuges im Sinne einer Schaltung in einen höheren Gang
JP3085029B2 (ja) * 1993-06-28 2000-09-04 日産自動車株式会社 自動変速機の変速制御装置
DE19533305A1 (de) * 1995-09-08 1997-03-13 Bayerische Motoren Werke Ag Elektronisch gesteuertes Automatikgetriebe in Kraftfahrzeugen
DE102012206385B4 (de) * 2012-04-18 2019-08-29 Mtu Friedrichshafen Gmbh Verfahren zur Steuerung einer Registeraufladung einer Brennkraftmaschine mit einem Motor und einer Abgas-Turboaufladegruppe, Steuereinrichtung und Brennkraftmaschine
DE102014104292A1 (de) * 2014-03-27 2015-10-01 Jens Wittke Verfahren und Anordnung zum Betrieb eines Kraftfahrzeuges mit Verbrennungsmotor und Automatikgetriebe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0000960A1 (fr) * 1977-08-29 1979-03-07 Robert Bosch Gmbh Dispositif de changement de vitesse pour des boîtes de vitesse à rapports étagés de véhicules automobiles
EP0144608A1 (fr) * 1983-11-18 1985-06-19 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Procédé et dispositif pour le contrôle d'un ensemble embrayage-et-transmission
WO1989005934A1 (fr) * 1987-12-17 1989-06-29 Kabushiki Kaisha Daikin Seisakusho Organe de commande de changement de rapport de vitesse pour une transmission automatique

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2714559C3 (de) * 1977-04-01 1979-09-13 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zur Steuerung von Stufengetrieben in Kraftfahrzeugen
DE2811574A1 (de) * 1978-03-17 1979-09-27 Bosch Gmbh Robert Vorrichtung zur regelung einer antriebsmotor-getriebe-einheit eines kraftfahrzeuges
JPS5833427B2 (ja) * 1979-03-14 1983-07-19 トヨタ自動車株式会社 車輌用変速機の切換制御装置
JPS56147949A (en) * 1980-04-15 1981-11-17 Nippon Soken Inc Automatic speed change controller
DE3139838C2 (de) * 1981-10-07 1995-11-30 Bosch Gmbh Robert Steuervorrichtung für ein Automatikgetriebe in einem Kraftfahrzeug
DE3375993D1 (en) * 1982-04-19 1988-04-21 Nissan Motor Method and apparatus for controlling reduction ratio of continuously variable transmission with accelerator pedal displacement speed compensation
FR2545567B1 (fr) * 1983-05-02 1989-06-30 Renault Perfectionnements a la commande de changements de rapport dans une transmission automatique a rapports etages
US4788892A (en) * 1985-05-11 1988-12-06 Toyota Jidosha Kabushiki Kaisha Controller for automatic transmission
DE3627549A1 (de) * 1986-08-13 1988-02-18 Daimler Benz Ag Vorrichtung zum selbsttaetigen umschalten von fahrzeugaggregaten eines kraftfahrzeuges
JPS63207735A (ja) * 1987-02-20 1988-08-29 Toyota Motor Corp 車両用自動変速機の旋回時制御の解除装置
US5113721A (en) * 1987-10-12 1992-05-19 Auto Polly Gesellschaft M.B.H. Method and apparatus for controlling a motor vehicle drive train
JP2705469B2 (ja) * 1992-07-15 1998-01-28 松下電器産業株式会社 マスクデータ作成装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0000960A1 (fr) * 1977-08-29 1979-03-07 Robert Bosch Gmbh Dispositif de changement de vitesse pour des boîtes de vitesse à rapports étagés de véhicules automobiles
EP0144608A1 (fr) * 1983-11-18 1985-06-19 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Procédé et dispositif pour le contrôle d'un ensemble embrayage-et-transmission
WO1989005934A1 (fr) * 1987-12-17 1989-06-29 Kabushiki Kaisha Daikin Seisakusho Organe de commande de changement de rapport de vitesse pour une transmission automatique

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0984209A1 (fr) * 1998-08-31 2000-03-08 Eaton Corporation Procédé/système pour commander la montée de vitesse dans un système de transmission mécanique automatique
US6285941B1 (en) 1998-08-31 2001-09-04 Eaton Corporation Method/system for controlling shifting in an automated mechanical transmission system
US6527672B1 (en) 1998-10-24 2003-03-04 Zf Friedrichshafen Ag Method for controlling the automatic gearbox of a motor vehicle during spontaneous release of the accelerator pedal
EP1158217A3 (fr) * 2000-04-10 2004-06-30 Eaton Corporation Procédé / système de commande pour le changement de vitesse dans une transmission mécanique automatique
US6689017B2 (en) * 2000-10-26 2004-02-10 Aisin Seiki Kabushiki Kaisha Shift control apparatus for an automatic transmission and shift control method for an automatic transmission
US6879900B2 (en) 2000-11-11 2005-04-12 Zf Friedrichshafen Ag Method for controlling an automatic gearbox of a motor vehicle in the event that the gas/pedal is spontaneously released
EP1342939A3 (fr) * 2002-03-08 2006-07-19 Adam Opel Ag Méthode de commande de transmissions automatiques à chemin en lacets
WO2004046586A1 (fr) * 2002-11-19 2004-06-03 Volkswagen Aktiengesellschaft Procede pour commander une boite de vitesses automatique

Also Published As

Publication number Publication date
EP0438643A2 (fr) 1991-07-31
DE59005935D1 (de) 1994-07-07
EP0438643A3 (en) 1991-10-09
DE4002325A1 (de) 1991-08-01
EP0438643B1 (fr) 1994-06-01

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